| The wide integration of distributed renewable energy generation is a significant trend in the development of distribution systems in the future.As a kind of green and carbon-free energy,renewable energy has been widely concerned by academic and industry worldwide.However,its volatility,intermittence and randomness limit its potential as high-quality energy.In order to describe the impact of diversified distributed generations and flexible loads integrated within distribution systems,the more refined time series analysis and evaluation mode need to be adapted in the analysis and evaluation work on a future active distribution system.Therefore,this thesis studies the time series analysis and evaluation method of the active distribution system considering the impact of the potential development quantity of regional renewable energies.(1)The evaluation model of regional potential development quantity of solar and wind energy based on meteorological resources analysis is constructed.Based on the analysis of meteorological resources,an evaluation process of the potential development quantity of regional solar energy resources expressed in the form of optimal photovoltaic installed capacity is proposed,which is based on the quantitative measurement of solar radiation within the area of regional photovoltaic installation land.An evaluation process of regional wind energy resources potential development quantity characterized by the form of optimal distributed wind power installed capacity is also proposed,which is based on the calculation of regional wind energy resources and takes the economy as the objective.The effectiveness of the evaluation model of renewable energy potential development quantity is verified by an example.The results can provide reasonable planning recommendations for the construction of the regional power grid and distributed generation.(2)A comprehensive optimization operation simulation model and method for the active distribution network are developed based on multi-scale time series analysis.The framework of the time series analysis model is proposed,which is suitable for multi-scale operation simulation analysis of active distribution system.A comprehensive optimization operation simulation model of the active distribution system based on time series analysis is proposed,to solve the problem of volatility,intermittence and randomness brought by distributed renewable energy integrated in distribution system.Finally,the effectiveness of the simulation model is verified by an example.The case results show that this model can simulate the optimization operation of distribution systems,improve the consumption capacity of renewable energy,and ensure the security,economy and stability of the whole system.(3)A method of time series evaluation on active distribution system with photovoltaic integration is proposed,as well as the framework design of the evaluation software.The hierarchical comprehensive analysis and evaluation concept for refined analysis and evaluation of the active distribution system with photovoltaic is proposed.Based on this,the general framework and functions of the evaluation software are presented comprehensively.The effectiveness and practicability of the evaluation function are verified by the case of a certain actual distribution system. |
PDF Full Text Request